At the title screen, press Select 60 times, then start a new game. Now press L+R+Select+A simultaneosly at any time during game play, then a cheat menu will appear.
Contributed By: Here To Stay.
Unlockable How to Unlock Bikini girl Leave the first room on level two and continue moving forward until a small hole guarded by a cat appears. Enter this opening and shoot the lower right wall. Kangaroos Destroy the first three enemies in the first room on level two, then turn around. Mini-house Locate the room in level one with small figures running about. Eliminate all enemies, stop, and turn around to face the entrance of this room. Slowly move along the wall on the right side and shoot the bottom right corner of the wall near the door Virtual Boy system and controller In the first level, locate the room with the built from girders with enemies that appear from left to right on the floor. Shoot the wall on the left side at the end of the room to reveal a Virtual Boy and a controller.
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